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http://dx.doi.org/10.14190/JRCR.2021.9.4.650

Study on the Quality Characteristics of High-strength Concrete Using LCD Industrial Waste  

Kim, Dong-Jin (School of Civil, Architectural Engineering & Landscape Architecture, Sungkyunkwan University)
Park, Seung-Hee (School of Civil, Architectural Engineering & Landscape Architecture, Sungkyunkwan University)
Choi, Sung (Department of Civil Engineering, KyungDong University)
Han, Yang-Su (Department of Civil Engineering, KyungDong University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.9, no.4, 2021 , pp. 650-657 More about this Journal
Abstract
Alkali activators that stimulate mineral compounds are expensive materials, but in order to replace industrial products of high alkali in gredien ts, both product an d econ omic feasibility must be satisfied. In this study, alkali in dustrial waste(LW) from the LCD man ufacturin g process were used for the purpose of alkali active reaction of GGBFS for high stren gth concrete over 50MPa. Concrete mixed with LW had reduced workability, but it had the characteristic of increasing compressive strength. Analysis using ACI 209 Compressive Strength Model Equation was made to compare the changes in strength coefficients according to LW mixing. The durability test of concrete, such as Chloride Penetration Resistance and carbonation resistance, also showed excellent performance. In the Adiabatic temperature rise test results, the concrete mixed with LW had the effect of accelerating the initial hydration heat. However, the final Adiabatic temperature rise was not significantly affected by the mixing of LW.
Keywords
LCD industrial waste; Alkali activator; Compressive strength; Chloride penetration resistance; Carbonation resistance;
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